Installation Manual
82
HSM file system
(HSM FS)
A file system, controlled by the FSE software. It is used to store file metadata (name, attributes,
permissions) and online files of an FSE partition. HSM file systems represent the primary
storage space of an FSE implementation. On the Linux platform, HSM file systems are based on
the Linux native Ext3 file system and FSE specific attributes are stored as Ext3 extended
attributes. On the Windows platform, HSM file systems are based on the Windows native NTFS
file system.
HSM file system filter The function of this module is to intercept relevant file system events for the FSE implementation
and to report them to the Hierarchical Storage Manager. On Linux platform, the filter is a kernel
module providing the HSM file system that is built on top of the Linux native Ext3 file system and
HP OnlineJFS/JFS 3.5, respectively. On Windows platform, the filter is a kernel driver and
intercepts all accesses to the Windows native NTFS file system.
HSM Health Monitor
(HHM)
A utility for monitoring storage capacity on file systems with FSE databases and system files, on
HSM file systems, and on the secondary storage space assigned to HSM file systems. The utility
can be configured to trigger actions if storage capacity rises above or drops below
configurable thresholds.
implementation
(FSE implementation)
HP StorageWorks File System Extender. Hardware with installed FSE software. FSE hardware
includes a tape library with drives, slots, media, and a changer, which is connected to the FSE
server host machine via an SCSI interface. See also ”software (FSE software)”.
initialization A process that labels the medium volume header on each volume found on a medium and
adds the corresponding FSE medium volume entry to the Resource Management Database. If
an FSE medium or FSE medium volume contains valid FSE user data and you want to initialize
it, you must use forced initialization.
job
(FSE job)
A process, executed by Partition Manager or Management Interface, which executes migration,
recall, reorganization, administrative, backup, recovery, and maintenance tasks. Migration and
recall jobs are triggered automatically by their respective policy, whereas reorganization,
administrative, backup, recovery, and maintenance jobs are triggered with FSE commands.
library
(FSE library)
A SCSI tape library attached to and configured for use in the FSE implementation.
Library Agent (LA) An FSE agent that handles requests for moving the FSE media between tape drives and library
slots and triggers media barcode rescans. The Library Agent process name is fse-la-s.
Limited Access Mode
(LAM)
One of the two HSM file system filter operational modes. When the HSM file system filter is
operating in Limited Access Mode for a particular HSM file system, you are only allowed to
browse the directory tree on the HSM file system or read the online data from it. You cannot
create, rename, move or delete directories and files, nor change their data or metadata.
Offline data is not recalled from FSE media; instead, the application that is accessing the file
receives an error. Limited Access Mode does not need FSE processes to be running on the FSE
client. However, if the processes are running, three data movement processes (migration,
release, deletion) can be executed – by being either triggered explicitly or started according to
the configured FSE partition policies. See also ”Full Access Mode (FAM)”.
Log Analyzer (LA) A utility for monitoring FSE event log files, which can be configured to periodically analyze
these files for specific patterns and send notification e-mails or SNMP traps.
low watermark A user-defined value for a level of disk usage on an HSM file system. When this value is
reached, a regular release process is stopped.
LTO Ultrium A Linear Tape-Open (LTO) tape format and tape drive product family from IBM and HP. FSE
supports LTO Ultrium 1, 2, 3, and LTO Ultrium 3 WORM series of tape media, and LTO Ultrium
1, 2, 3, and LTO Ultrium 3 WORM series of tape drives. See also ”medium (FSE medium)”.
maintenance job One of the FSE job types that performs maintenance tasks in FSE, namely, the File System
Catalog (FSC) consistency check and recreation of redundant migrated data copies.